Question

identify the function as exponential growth or exponential decay. then identify the growth factor or decay factor. y=9(1/2)^r

Answer 1

We have the function:

$y=9\cdot(\frac{1}{2})^r$

The growth/decay factor is the number that is the base of the exponent. For this function, the value of this factor is 1/2.

As this value is smaller than 1, the factor is a decay factor.

Answer: the decay factor is 1/2.